Sr/Bsr Triggering Method and Device

1. An SR triggering method, comprising: triggering an SR (Scheduling Request) process, in a case that there is uplink data transmission requirement in a bearer and/or a logical channel of a terminal, and there is no uplink resource available to the terminal on physical resources corresponding to numerologies available to the bearer and/or the logical channel triggering a corresponding BSR (Buffer Status Report) or there is no uplink resource available to the terminal on physical resources corresponding to numerologies and Transmission Time Interval (TTI) lengths available to the bearer and/or the logical channel triggering a corresponding BSR, wherein the numerologies available to the bearer and/or the logical channel or the numerologies and the TTI lengths available to the bearer and/or the logical channel are configured by a network side to the terminal, and different numerologies correspond to different subcarrier spacings in a frequency domain.

2. The method according to claim 1 , wherein the triggering the SR process comprises: in a case that a SR is capable of being transmitted only on physical resources corresponding to one or more specific numerologies corresponding to the bearer and/or the logical channel triggering the corresponding BSR or on physical resources corresponding to one or more specific numerologies and one or more specific TTI lengths corresponding to the bearer and/or the logical channel triggering the corresponding BSR, and in a case that the terminal is in sync in uplink on a physical resource corresponding to at least one of the numerologies or corresponding to at least one of the numerologies and at least one of the TTI lengths, then sending the SR by the terminal to a network side by using the physical resource corresponding to the at least one numerology or corresponding to the at least one numerology and the at least one TTI length to obtain an uplink scheduling grant (UL grant); and in a case that the UL grant is capable of carrying data, then transmitting the data directly; otherwise, transmitting BSR information through the UL grant.

3. The method according to claim 2 , wherein: in a case that the SR is capable of being transmitted only on physical resources corresponding to one or more specific numerologies corresponding to the bearer and/or the logical channel triggering the corresponding BSR or on physical resources corresponding to one or more specific numerologies and one or more specific TTI lengths corresponding to the bearer and/or the logical channel triggering the corresponding BSR, then a corresponding numerology or a corresponding numerology and a corresponding TTI length are determined according to delay requirements or quality of service (QoS) requirements corresponding to a service of triggering the SR.

4. The method according to claim 2 , wherein: a fact that the SR triggered by one bearer/logical channel of the terminal is capable of being transmitted only on the physical resources corresponding to one or more specific numerologies corresponding to the one bearer/logical channel or one or more specific numerologies and one or more specific TTI lengths corresponding to the one bearer/logical channel is specified by a protocol, or notified by a network side to the terminal; or a fact that the SR triggered by one bearer/logical channel of the terminal is capable of being transmitted on the physical resource corresponding to any numerology or corresponding to any numerology and any TTI length is specified by a protocol, or notified by the network side to the terminal; or whether the SR triggered by one bearer/logical channel of the terminal is capable of being transmitted only on the physical resources corresponding to one or more specific numerologies corresponding to this bearer/logical channel or one or more specific numerologies and one or more specific TTI lengths corresponding to this bearer/logical channel or is capable of being transmitted on the physical resource corresponding to any numerology or the physical resource corresponding to any numerology and any TTI length is specified by a protocol, or notified by the network side to the terminal.

5. The method according to claim 2 , wherein: the terminal determines, based on a cell or a cell group, whether the terminal is in sync in uplink on a physical resource corresponding to one numerology or a physical resource corresponding to one numerology and one TTI length, wherein physical resources corresponding to all numerologies or corresponding to all numerologies and all TTI lengths in one cell or one cell group have same uplink synchronization status.

6. The method according to claim 5 , wherein: the terminal determines, according to the cell or cell group in which the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length is located, whether the terminal is in sync in uplink on the physical resource corresponding to one numerology or the physical resource corresponding to one numerology and one TTI length; and in a case that the terminal is in sync in uplink on the cell or cell group in which the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length is located, then the terminal is in sync in uplink on the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length; otherwise, the terminal is out of sync in uplink on the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length.

7. The method according to claim 5 , wherein: each cell or cell group corresponds to a Time Alignment (TA) timer for uplink synchronization maintenance, wherein starting, restarting or timing-out of the TA timer is maintained based on the cell or the cell group, and TA timers corresponding to different cells or cell groups are configured with a same length or different lengths.

8. The method according to claim 2 , further comprising: determining by the terminal, according to a uplink synchronization status of the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length, whether the terminal is in sync on the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length.

9. The method according to claim 1 , wherein the triggering the SR process comprises: in a case that a SR is capable of being transmitted only on physical resources corresponding to one or more specific numerologies corresponding to the bearer and/or the logical channel triggering the corresponding BSR or on physical resources corresponding to one or more specific numerologies and one or more specific TTI lengths corresponding to the bearer and/or the logical channel triggering the corresponding BSR, and in a case that the terminal is out of sync in uplink on all physical resources corresponding to the numerologies or corresponding to the numerologies and the TTI lengths, then initiating a random access procedure by the terminal to a network by using a physical resource corresponding to at least one numerology or corresponding to at least one numerology and at least one TTI length to obtain uplink synchronization and a uplink scheduling grant (UL grant); and in a case that the UL grant is capable of carrying data, then transmitting the data directly; otherwise, transmitting BSR information through the UL grant.

10. The method according to claim 1 , wherein the triggering the SR process comprises: in a case that the SR is capable of being transmitted on a physical resource corresponding to any numerology or corresponding to any numerology and any TTI length, and in a case that the terminal is in sync in uplink on a physical resource corresponding to at least one of the numerologies or corresponding to at least one of the numerologies and the TTI lengths, and in a case that the terminal has an uplink scheduling grant (UL grant) on the physical resource corresponding to at least one numerology or corresponding to at least one numerology and at least one TTI length, then: transmitting BSR information directly through the UL grant; determining by a network, according to the BSR information, information on the bearer/the logical channel of the terminal that has uplink data to be transmitted; determining by the network, according to a mapping relationship between the bearer/logical channel and the numerologies or between the bearer/logical channel and the numerologies and the TTI lengths, available numerologies corresponding to the bearer/the logical channel of the terminal or available numerologies and available TTI lengths corresponding to the bearer/the logical channel of the terminal; selecting by the network, a numerology for data transmission or a numerology and a TTI length for data transmission from the available numerologies or the available numerologies and available TTI lengths; and determining a physical resource corresponding to the numerology or corresponding to the numerology and the TTI length.

11. The method according to claim 10 , wherein: in a case that the terminal is out of sync in uplink on the physical resource corresponding to the numerology selected for the data transmission or the numerology and the TTI length selected for the data transmission, then the terminal is triggered to initiate a random access procedure on the physical resource corresponding to the numerology or corresponding to the numerology and the TTI length to obtain uplink synchronization.

12. The method according to claim 1 , wherein the triggering the SR process comprises: in a case that the SR is capable of being transmitted on the physical resource corresponding to any numerology or and numerology and any TTI length, and in a case that the terminal does not have an UL grant on the physical resource corresponding to the any numerology or corresponding to the any numerology and the any TTI length, then selecting by the terminal at least one numerology or at least one numerology and at least one TTI length to initiate a random access procedure and obtain an uplink scheduling grant (UL grant).

13. The method according to claim 12 , wherein: in a case that a physical resource corresponding to the numerology which obtains the UL grant or a physical resource corresponding to the numerology and the TTI length which obtain the UL grant is capable of being used to carry data of the bearer/the logical channel of the terminal that currently has the uplink data transmission requirement, and in a case that the UL grant is capable of carrying all data to be transmitted, then the UL grant is used directly for data transmission.

14. The method according to claim 12 , wherein: in a case that a physical resource corresponding to the numerology which obtains the UL grant or a physical resource corresponding to the numerology and the TTI length which obtains the UL grant is capable of being used to carry the data of the bearer/the logical channel of the terminal that currently has the uplink data transmission requirement, and in a case that the UL grant is incapable of carrying all data to be transmitted, then the UL grant is used to transmit BSR information, the network determines, according to the BSR information, information on the bearer/the logical channel of the terminal that has uplink data to be transmitted, determines available numerologies corresponding to the bearer/the logical channel of the terminal or numerologies and TTI lengths corresponding to the bearer/the logical channel of the terminal according to a mapping relationship between the bearer/the logical channel and the numerologies or between the bearer/the logical channel and the numerologies and the TTI lengths, selects the numerology for data transmission or the numerology and the TTI length for data transmission from the available numerologies or from the available numerologies and the TTI lengths, and determines a physical resource corresponding to the numerology or a physical resource corresponding to the numerology and the TTI length.

15. The method according to claim 12 , wherein: in a case that a physical resource corresponding to the numerology selected for the data transmission or a physical resource corresponding to the numerology and the TTI length selected for the data transmission is out of sync in uplink, then the terminal is triggered to initiate a random access procedure on the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length to obtain uplink synchronization.

16. The method according to claim 1 , wherein the triggering the SR process comprises: in a case that the SR is capable of being transmitted on a physical resource corresponding to any numerology or any numerology and any TTI length, and in a case that the terminal is out of sync in uplink on physical resources corresponding to all numerologies or corresponding to all numerologies and all TTI lengths, then initiating a random access procedure by the terminal to the network by using the physical resource corresponding to at least one numerology or corresponding to at least one numerology and at least one TTI length to obtain uplink synchronization and uplink scheduling grant (UL grant).

17. The method according to claim 16 , wherein: in a case that the physical resource corresponding to the numerology which obtains the UL grant or the physical resource corresponding to the numerology and the TTI length which obtains the UL grant is capable of being used to carry data of the bearer/logical channel of the terminal that currently has a uplink data transmission requirement, and in a case that the UL grant is capable of carrying all data to be transmitted, then the UL grant is used directly for data transmission.

18. The method according to claim 16 , wherein: in a case that the UL grant corresponding to the numerology which obtains the UL grant or the UL grant corresponding to the numerology and the TTI length which obtains the UL grant is incapable of carrying all data to be transmitted, then the UL grant is used to transmit BSR information, the network determines, according to the BSR information, information on the bearer/logical channel of the terminal that has uplink data to be transmitted, determines available numerologies corresponding to the bearer/logical channel of the terminal or available numerologies and available TTI lengths corresponding to the bearer/logical channel of the terminal according to a mapping relationship between the bearer/logical channel and the numerologies or between the bearer/logical channel and the numerologies and the TTI lengths, selects a numerology for data transmission or a numerology and a TTI length for data transmission from the available numerologies or the available numerologies and the available TTI lengths, and determines the physical resources corresponding to the available numerologies or corresponding to the available numerologies and the available TTI lengths.

19. The method according to claim 18 , wherein: in a case that the terminal is out of sync in uplink on the physical resource corresponding to the numerology selected for the data transmission or the physical resource corresponding to the numerology and the TTI length selected for the data transmission, then the terminal is triggered to initiate a random access procedure on the physical resource corresponding to the numerology or the physical resource corresponding to the numerology and the TTI length to obtain uplink synchronization.

20. A terminal, comprising: a storage, a processor, and a computer program stored in the storage and executable by the processor, wherein when the computer program is executed by the processor, the processor implements the steps of the method of triggering the SR according to claim 1 .